What Is the difference between clustering and classification?

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Alva
Posts: 38
Joined: Sun Apr 10, 2022 12:17 am

What Is the difference between clustering and classification?

Post by Alva »

I have this question. It seems to me That clustering Is very similar to classification. What Is the difference?
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Mark
Posts: 51
Joined: Wed Apr 06, 2022 3:23 am

Re: What Is the difference between clustering and classification?

Post by Mark »

From my understanding, clustering is about automatically grouping together objects based on their attributes, when we dont know the groups beforehand.

Classification is about determining to which group (class) an object belong given some predefined groups and information about some objets in those groups
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gmc
Posts: 58
Joined: Tue Apr 05, 2022 4:48 pm

Re: What Is the difference between clustering and classification?

Post by gmc »

For clustering, some popular algorithms are DBSCAN, the K-MEANS, and the DENSITY PEAK CLUSTERING. Some new algorithms now also use the deep learning etc.

For classification, the popular algorithms are like ID3, C4.5, KNN, Decision tree, SVM, deep learning, Extreme learning machine etc.
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